In #MESExperiments 54, I showcase the amazing SpillNot centripetal waiter's tray, whose circular motion can balance a cup of water without spilling it over, even while performing a full 360 degrees upside down! The SpillNot works on the principle that circular motion involves a centripetal force that brings the tray back towards the centre of the circular motion — this results in the cup of water experiencing a normal force far directly onto the tray, which far exceeds the downwards force due to gravity. The most astonishing part is that even a straw placed in the cup barely even experiences any slight nudge as it moves at rapid speeds. I also place my phone in the tray with both front selfie camera and rear camera views to further illustrate this amazing phenomenon!
#physics #experiment #centripetalforce #inertia
Stay tuned for #MESExperiments 55...
Links unedited videos and more info
- SpillNot with a cup of water and a straw:
- SpillNot with a phone:
- SpillNot with Selfie Phone Camera:
- SpillNot with Rear Phone Camera:
- SpillNot website and science behind it: https://www.thespillnot.com/the-science
- Bruce Yeany centripetal / centrifugal tray tutorials: https://www.youtube.com/@YeanyScience/search?query=centripetal%20tray
Timestamps
- SpillNot with a cup of water and a straw doesn't spill the water or nudge the straw – 0:00
- SpillNot with phone filming with selfie camera – 1:03
- SpillNot with phone filming with rear camera – 1:29
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